Paper stock regulator



Dec. '13, 1932. H, D, WELLS 1,890,799

PAPER STOCK A REGULATOR Dec. 13, 1932. H. D. WELLS PAPER sToQK REGULATOR 2 sheets-sheet I `2 Filed May 22, 1930 IIIJ..

Patented Dc. 13, 1932 HAROLD DONALD WELLS, OF"GLENS FALLS, NEW YORK ,PATENT er1-*lou` PAPER STOCK REGULATOR Application filed May 22, 1930. Serial No. 454,703.

The principal object of this invention is -to regulateor rectify the consistency of paper stuff more uniformly and more accuratelythan present machines.

Another object is to regulate to uniformity instantly and accurately large variations in consistency of stui'f, and at the same time record this Work on a recording gauge.

Another object is to provide a simple and effective stuff regulator; eliminating troublesome motor, reduction gears, ratchet and pawl, delicate Weighing scales, orifice which often clogs, cylinder Which often gets dirty and upsets regulation, motor driven agitator,-

conical orifice, and other troublesome features; thus providing a regulator which is rugged, Which gives dependable operation requiring no attention.

Another Objectis to provide a regulator which is applicable to all kinds of paper stock, Which can 'b quickly and easily 4changed from one order to the next; one Which has a greater range than others operating on a thicker or thinner stock.

Another objectv is to provide a regulator which produces umform consistency stu and accurately regulates or rectiies stuff in various parts of papermills, etc.; such as at paper machines, at jordans, at mixers and proportining machines, at board machines, at pulp machines, at screens, at bleachers and thelike; which can produce uniform thin.

stock for screens. 4

Another object is to provide a regulator 1 in which all hunting is eliminated.

With these `and other beneficial objects .in view, I now describe this invention with reference to the accompanying drawings in which Fig. 1 is a top plan View of a regulator constructed in accordance with my invention.

Fig. 2 is a'vertical-sectional view on line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional View on the plane of line See-3 offFig. 1.1

Fig. 4 is a diagrammatic sectionall perspective View of the tank and the means by which it is partitioned into the various chambers and passages hereinafter described.

F ig. 5 is an enlarged vertical sectional View v through the Water admission valve.

The preferred construction has been illustrated and While such construction will be herein specifically explained, it is to be understood that Within the scope of the invention as claimed, numerous variations may be made.

The numeral 6 denotes a rectangular box or tank Whose interior is partitioned in a manner hereinafter described, to provide an initial stock-receiving chamber 7, a constantlevel Water chamber 8, a stock-rectifying chamber 9a stock-receiving control chamber 10, an outlet passage 11 from the rectifying 65 chamber 9, a discharge passage 12 from the control chamber 10, a Water chamber 13 under the constant level chamber 8, Water-conducting means 14-15 from the chamber 13 to the rectifying chamber 9, and a stock-conducting passage 16 fromthe initial stock-receiving chamber 7 to said rectifying chamber 9. The passage 16 embodies a vertical dam 17 over which the stock spills into the rectifying chamber 9, andthe passage 15 embodies a ver- 75 ff tical dam 18 over which the Water spills into said chamber 9, the upper end of said dam 18 being provided With a flange 19 which substantially overlies the dam 17. These two dams are so positioned that the stock and Water spill over them in sheets and these sheets contact with each other insuring thorough mixing. o 1

The chamber 8 is provided with a Water inlet 2O (Fig, 1) controlled by a oat-actuat- 85 ed valve 21 Within said chamber, said valve 21 servingl to maintain a constant water' level within this chamber. The bottom of the chamber 8 is provided with a Water outlet 22 controlled by a valve 23, this Valve being 90 actuated in a manner hereinafter described. l

The initial stock-receiving chamber 7 is provided with a stock inlet 24 having a valve 25, this valve being connected by appropriate u operating. means such as rod 26 and lever 27, 9 with a oat 28 in the rectifying chamber 9. f The outlet passage 11 from Vthis chamber, is

formed with two openings 29 and 30 cn- 'control chamber 10 While the opening' 30 is in Communication With a main discharge 31 from the entire apparatus. The discharge passage 12 trom the control chamber 10 leads to this passage 3'1 and a pivoted gate 32 which is adjustable by appropriate means 33, is employed for varying the conducting capacity oi' said discharge passage 12.

A stock-raised iloat 34 is disposed Within the control chamber 10 and is connected by a rod with a toggle 36 suitably mounted in the upper portion ot the tank 6, said toggle being connected by a link or the like 37 with the valve 23.

.di recording meter 33 is suitably mounted upon the tanlr and embodies the conventional rotatable dislr co-acting With tvvo pens 39 and Ll0.. Pen 39 is operativelyT connected by appropriate means il with the toggle 36 and is operated by this toggle incident to operation oit the valve 23 to show the consistency ot the stock betere regulation. The pen 4() is connected by a rod Li2-.With a doet t3 Within the control chamber 10 and is actuated by said float to show the consistency of 'the stock after regulation. The manner in Which the two pens indicated at 39 and 40, show the stoclr consistency before and after regulation, will be hereinafter more fully explained.

The paper stuit or stock enters the regulator from the inlet 2twhen the valve 25 is c sage 16 and spills over the dam 17 into the rectifying chamber 9, and when Hoat 28 in said chamber 9 has risen to a predetermined extent, it operates the connections 27 and 26 to' close said valve 25. Much of the stock passes from the rectifying chamber 9 and its outlet 11, through the gate-controlled opening 29 into the control chamber 10, and the remainder passes through the gate-controlled opening 30 directly into the main discharge 31 from the apparatus. The quantity of stock passing through the opening 29 into the control chamber 10, is a little less than the minimum requirements, and is maintained constant. The quantity passing through the opening 30 is the remainder necessary toproduce the Weight for the order, and the gate 30 which controls this opening 30 is adjustable from one order to the next, to meet the requirements of Weight. The stock passing through the opening 29 travels around a baille 45 into the control chamber 10 and takes substantially the course illustrated by the arrows in Fig. 4, passing out through the discharge passage 12 Whose carrying capacity has been properly adjusted by inward orv outward shifting of .the gate 32.` The stock passing through passage 12 flows to the mail?? discharge 31, mingling with that which Was discharged through the opening 30. Gate 32 is adjusted toward closed position until the stock level in the control chamber 10 may rise vupon the gate 32.

Lenawee to the proper height, causing float 3ft and the operating connections 35-36--37 to open the Water admission valve 23. Upon each opening ot this valve, Water from the chamber 3 enters the chamber 13 and then passes through the Water-conducting means 14-15 into the rectit'ying'chamber 9, said Water spilling over the dam 13 and mixing With the stock passing over the dam 17. rlhe regulated Water mining with the stock in the chamber 9, brings the latter to the desired consistency.

rlhe stoclr possesses definite friction values at various consistencies and this friction acts las long as the stock re mains uniform, there is no movement of regulator parts, but when the s'toclr becomes somewhat thicker, it cannot Flow as rapidly through the outlet 12 from the chamber 10. with the result that the level rises in said chamber. rli`his rising of Ithe stoclr level, raises the float 34 and causes opening of the Water admission valve 23 to admit the proper amount oit Water to bring the stoclr baclr te normai consistency. ldhen thinner stock is received in chamber 10, it can more readily escape ltrom said chamber with the result that the iioat 34- then drops slightly, causing closing ol the Water admission valve 23 to the proper extent. 'lhe construction ot' the regulator is such that changes in consistency are immediately rectified and the level in the chambr 10 changes only minutely. rlhus, the stoclr discharging from the apparatus through the main discharge 31, is uniform in consistency and uniform in quantity.

With Jfurther regard to the pens or indicators 39 and 40, attention is invited to the following :e-The operation of the Watervalve 23 is relative to the consistency of stock be fore regulation, as the regulator valve is operated relative to variations ot stock, to bring the latter to uniformity. Hence, the indicater4 or the like`39 shows the consistency of the stock before regulation, being actuated by a part of the operating means for the regulating valve 23. Asthe pointer or the like 40 is controlled by the oat 43 which rides upon the surface of the regulated stock in the control chamber 10, itshows theconsistency of the stock after regulation.

Attention is invited to the fact that the admission of Water (or other liquid) to the mixing or rectifying chamber 9, is dependent upon the travel of regulated or rectified stock through the control chamber 10, in which the water valve float 34 is located. The stock enters the control chamber 10 through the opening 29 and leaves through the passage 12, and in order that the flow shall take place in the required manner Without undue fluctuation, it is necessary to maintain a substantially constant head of stock above said opening 29. Due to the construction of the present invention, this head is maintained in the chamber 9, and hence a constant level chamber heretofore required for the purpose of maintaining the required head above the inletl of a control chamber analogous to chamber 10, is dispensed with, the function retained and assigned to the chamber 9.

Furtherattention is invited to the fact that whereas stock regulation has heretofore been controlled by automatic operation only of a 0' liquid valve which admits liquid to a rcctifying or mixing chamber, I automatically control both a liquid admission valve-and a stock .1 dmission valve, the one being moved toward open position when the other is moved toward closed position, and vice versa. By so doing, I attain unusually quick stock rectitication or regulation, bringing the stock almost instantaneously back to normal as soon las its consistency fluctuates one way or'the other. T o illustrate, if abnormally thick stock enters the chamber 9, it rises somewhat in said chamber 9, and this slightly increases the head above the controlchamber inlet 29, with the result that the stock enters the control chamber 10 somewhat more rapidly. At the same time, due to friction of the relatively stift' stock against the gate 32, said stock leaves chamber 10y with less rapidity. These factors cause rise of the stock level somewhat in the chamber 10. The rise in the chamber 9 operates float 28 to partially close the stock admission valve 25, andthe rise in chamber 10 operates float 34 to move the Water valve 23 further toward open position, or from closed to partly open position should said valve stand closed. By thus diminishing the admission of stock and admitting or increasing the admission of waterat the same sistency with unusual rapidity, in fact, almost instantaneously with the slightest rise in said chambers.

Provision is made whereby the valve 23 is prevented from hunting, that is, said valve said ring being provided with a downwardly facing valve seat 48. An lupwardly opening` dash pot 49 is disposedbelow the ring 46, within the chamber 13, said dash pot being provided with upstanding arms 50 secured to the ring 46 and hence supporting said dash pot. The lower end of this dash pot is provided With a restricted, regulable port 51 which controls discharge ofvwater into the chamber 13 from the dash pot, and entrance of waterinto said dash pot from said chamber. The valve 23 is cooperable with the seat 48 and is provided with a plunger 52 operable C" within the dash pot 49. In order that this of the constant level chamber however, beingl time, the stock is brought back to normal conis prevented from letting in too much Water valve may lower to admit water to the rectiying chamber 9, it must rst displace water through the port 51 from the dash pot 49. Similarly, in order to partially or totally close, the valve must draw Water into the dash pot 49 through the port 51. Hence, the movement of the valve is so controlled that it is prevented from hunting.

The float-controlled valve 21 in the chamber 8, may be of any desired construction and constitutes no part of the present invention. Obviously, this valve and all other` parts of the apparatus may be constructed from any materials suitable to the purposes for which they are designed and the conditions which must be met. It may also be stated that although the tank 6 may be partitioned in any of various ways to provide the structurall 13, these two chambers being separated by the bottom 47, abovejnentioned. At the side of the partition 54 opposite the chambers 8 and 13, is the chamber 10, the baille 45 of this chamber being secured to the partition 53. The chamber. 9 is at the opposite side of the partition 53 from the chamber 10, being formed in part by said partition 53, partially by the dam 17 which is secured to said partition 53 and to one of the side walls of the tank 6, and partially by a horizontal partition 55. This partition 55 forms the bottom of the chamber 9 and the top of the chamber 7. .The passage 16 is formed between the 'daml and the dam 18, and the latter also co-acts with the-partition 53'and adjacent walls of the tank 6, in forming the passage 15, the partition 53 being provided with the notch 14 which places said passage 15 in communication with the chamber 13. The lower end of passage 15 is closed by directing the dam 18 outwardly and securing it against the adjacent vertical side of the'tank.

In opposed relation with the dam 17 `and spaced inwardly from one side of the tank 6, is afsubstantially L-shaped .vertical partition 56 which is secured to the end of the horizontal partition 55 remote from said dam 17. This partition 56 forms one wall of the rectifying chamber 9 and one wall of the initial receiving chamber 7 and the notch 5710i said partition 56, places chamber 9 in communication with the vertical outlet passage 11. This passage is formed partly by the partition 53 and partlypby a vertical partition 58 parallel with said partition 53 andextending from partition 56to the adjacent side wall of the tank 6. AOpening 30 is formed in theA lower portion of the partition 56 and to the halide 45, while the outer edge of said partition 59 is secured to a side wall of the tank 6. The gate 32 Yoperates between the tank bottom and the partition 59 and contacts with both of them.

The various partition members and the like may be soldered, welded or otherwise secured in such relation as to jointly formthe various chambers,- passages, etc.

I claim 1. A stock regulating apparatus comprising a stock-rectifying chamber, stock-con-V ducting means leading to said rectifying chamber and embodying a stock valve, waterconducting means leading to said rectitying chamber and embodying a water valve, a stock-raised float in said rectifying chamber and means connecting said fioat with said stock valve for controlling the latter, a stockreceiving control chamber and a passage leadmg thereto fromv said rectitying chamber, a stock-lifted float in said control chamber and means connecting. this float with said water valve to control the latter, and a discharge passage leading from said control chamber. 2. A stock regulating apparatus comprismg a constant level Water chamber having a float-controlled water inlet valve and a wa-` ter outlet' valve, an initial vstock-receiving chamber having a stock inlet valve, a stockrectifying chamber, means for conducting water and stock to said rectitying chamber from said water outlet valve and said initial stock-receiving.chamber respectively, a stockraised float in said rectifying chamber and means connecting said float with said stockinlet valve to control the latter, a stock-receiving control chamber and a stock-conducting passage leading thereto from said rectifying chamber, a stock-lifted float in said control chamber and means connecting this oat with s aid water outlet valve to control the latter, and a discharge passage leading from said control chamber.

3. A' stock regulating apparatus comprisf l ing a stock-rectlfymg chamber, stock-con-- ducting means lea-ding to said rectitying chamber and embodying a stock valve, waterconductingk means leadmg to` said rectlfying `chamber and embodying a water valve, a

conducting passage leading from said rectifying chamber and having two outlets, a, main discharge from the entire apparatus with which one of these outlets communicates, a stock-receiving control chamber into which the other of said outlets discharges, a stockraised float in said control chamber and means connecting this fioat with said water` Valve for controllingthe latter, and a discharge passage leading from said control chamber to said' main discharge.

t. A structure as specilied in claim 3; together with means for varying the conducting capacities of said two outlets and'the discharge passage leading from the control chamber.

5. A structure stock-.conducting means and said water-conducting means embodying two closely related dams, said dams being positioned to cause spilling of the stock and water over them into the rectifying chamber in contacting sheets.

6. A s'tock regulating apparatus comprising a single tank, partitioning means dividing said tank into a constantv level water chamber, an initial stock-receiving chamber, a stock-rectifying chamber, a stock-conducting passage from said initial stock-receiving chamber to said rectifying chamber, a waterconducting passage leading to said rectifying chamber, a stock-outlet passageA from said rectifying chamber, a stock-receiving control chamber, and a discharge passage from said control chamberj means 'for maintaining a constant water level in said water chamber, a stock-admission valve for controlling entrance of stock into said initial stock-receiving chamber, a water-regulating valve for controlling communication between said water chamber and said water-conducting passage, operating means for said stock-admissionv'alveembodying a float in said rectifying chamber, operating meanspfor said water-regulating valve embodying a float in said control chamber, two gates one of which controls communication between said stockoutlet passage and said control chamber, the other` gate` controlling communication between said steck-outlet passage and said discharge passage, and means for regulating the carrying capacity of the latter.

7. A structure as specified in claim 6; said partitioning 'means embodying closely related dams forming portions of said water-conducting passage and said stock-conducting passage, said dams being positioned to cause spilling of the water and stock over them into the rectifying chamber in contacting sheets.

8. In a stock regulating apparatus, a stock Areceiving and rectifying chamber, a control chamber andemeans placing 1t 1n communicamotion-transmitting means directly connected with said stock-actuated member and ,directly connected with said valve forv directly as speciiied in claim l; said y transmitting movements of said stock-actuated member to said valve.

9. In a stock regulating apparatus, a stockreceiving and rectifying chamber, a control chamber in 'communication therewith, a water chamber having an outlet valve through which the water discharges by gravity, a dash-pot for controlling the speed at which said valve opens and closes, means for conducting the water from said valve to said rectifying chamber, said means containing said dash-pot, a stock-raised ioat in said control chamber, and means connecting said oat withsaid valve for controlling the latter.

10. ln a stock consistency regulating apparatus, a control chamber which receives the regulated stock, said chamber having an outlet provided with means for varying its conducting capacity, and liquid supply means for the stock having an operating member actuated by rise and fall of stock in said` chamber.

11. ln a stock regula-ting apparatus, an ini` tial stock-receiving chamber having a stock f inlet, a stock-rectifying chamber and meansy for conducting the stock from said initial chamber to said rectifying chamber,l a valve for said stock inlet, a float in said rectifying chamber, and means connecting said ioat with said valve for controlling the latter.

12. lin a stock regulating apparatus, stock- -controlled valve mechanismfor admitting water to the stock to regulate its consistency, indicating means operatively connected with .and actuated by said valve mechanism for showing the consistency of the stock before regulation thereof, and additional stock-conand conducting means, stock and liquid adadmission of liquid to a stock-conducting.

mixing chamber is dependent upon flow of regulated stock through a control chamber which receives the stock by ,gravity from said mixing chamber; a valve for controlling stock admission to said mixing chamber, and means actuated by rise and fall of stock in vsaid mixing chamber for operating said stock admission valve; whereby the last named means is instrumental `in regulating the stock and in maintaining a substantially constant head above the inlet through which said control chamber receives the regulated stock..-

17. In a stock regulator, a stock and liquid mixing and conducting chamber having at least two gravity outlets, a control chamber which continuously receives regulated stock y from one of said outlets, said control chamber also having a gravity outlet, means actuated by the stock in said control chamber for controlling admission of Vliquid to said mixing chamber, and means including a stock-actuated member in said mixing chamber for controlling the admission of stock to the latter, the stock regulation effected by said admission of stock and liquid serving to maintain a substantially Vconstant head above said one of said mixing chamber outlets.

In testimony whereof I aliix my signature.

, HAROLD DONALD WELLS.

itin communicaamber, means for la. lln a stock regulator, stock receivingv mission means for said stock receiving and conducting means including stock and liquid valves, `and means controlled by the stock in said receiving and conducting means for moving the stock valve toward closed position and the liquid valve toward open position upon reception ot abnormally thick stock in said conducting means and vice versa.

15. lin a stock regulator, a'stock and liquid mixing chamber through which stock flows lis continuously, a control chamber through which a sample of the stock is continuously l 

